Macrophages attacking larva (microfilaria, white) of Wuchereria bancrofti, the causative agent of elephantiasis.

Coloured SEM of a macrophage engulfing a mauve Leishmania sp. parasite.

A flame cell, a plasma cell variant that overproduces IgA antibodies. IgA antibodies are loaded with carbohydrates which stain red with a routine Wright’s stain. 

I studied immunology in university once upon a time. Macrophage like the one rendered above are still near and dear to my heart.

Clickthrough for short animation.